The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for performing a cell change procedure in the wireless communication system, the method comprising: receiving configuration information indicating an identifier of a radio bearer to which a cell change procedure be performed; and performing the cell change procedure in RLC (Radio Link Control) and PDCP (Packet Data Convergence Protocol) entities of the radio bearer indicated in the configuration information, wherein the cell change procedure comprises a re-establishment of the RLC and PDCP entities.
Legal claims defining the scope of protection, as filed with the USPTO.
3. The method of claim 1, wherein the PDCP-related security key is related to integrity protection and/or ciphering.
4. The method of claim 1, wherein the radio bearer corresponds to a first type radio bearer, the first type radio bearer being served by both a master base station and a secondary base station.
5. The method of claim 4, wherein the first type radio bearer comprises a split radio bearer.
6. The method of claim 1, wherein the radio bearer corresponds to a second type radio bearer, the second type radio bearer being served by either a master base station or a secondary base station.
7. The method of claim 1, wherein the RRC message is related to a cell change.
10. The apparatus of claim 8, wherein the PDCP-related security key is related to integrity protection and/or ciphering.
11. The apparatus of claim 8, wherein the radio bearer corresponds to a first type radio bearer, the first type radio bearer being served by both a master base station and a secondary base station.
12. The apparatus of claim 11, wherein the first type radio bearer comprises a split radio bearer.
13. The apparatus of claim 8, wherein the radio bearer corresponds to a second type radio bearer, the second type radio bearer being served by either a master base station or a secondary base station.
14. The apparatus of claim 8, wherein the RRC message is related to a cell change.
17. The at least one computer memory of claim 15, wherein the PDCP-related security key is related to integrity protection and/or ciphering.
18. The at least one computer memory of claim 15, wherein the radio bearer corresponds to a first type radio bearer, the first type radio bearer being served by both a master base station and a secondary base station.
19. The at least one computer memory of claim 18, wherein the first type radio bearer comprises a split radio bearer.
20. The at least one computer memory of claim 15, wherein the radio bearer corresponds to a second type radio bearer, the second type radio bearer being served by either a master base station or a secondary base station.
21. The at least one computer memory of claim 15, wherein the RRC message is related to a cell change.
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August 6, 2020
August 2, 2022
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